Add ansible action plugin `collect`

- this plugin collects information or metrics from string
- it is reworked from qtip.collector.parser.grep
- the captured subgroups are always list even only one match found

Change-Id: I1def3d7b40c7928b503fae1be531976a13e5d0be
Signed-off-by: Yujun Zhang <zhang.yujunz@zte.com.cn>

3 files changed, 45 insertions, 0 deletions

diff --git a/qtip/ansible_library/plugins/__init__.py b/qtip/ansible_library/plugins/__init__.py
new file mode 100644
index 00000000..e69de29b
--- /dev/null
+++ b/qtip/ansible_library/plugins/__init__.py
diff --git a/qtip/ansible_library/plugins/action/__init__.py b/qtip/ansible_library/plugins/action/__init__.py
new file mode 100644
index 00000000..e69de29b
--- /dev/null
+++ b/qtip/ansible_library/plugins/action/__init__.py
diff --git a/qtip/ansible_library/plugins/action/collect.py b/qtip/ansible_library/plugins/action/collect.py
new file mode 100644
index 00000000..88ad0e35
--- /dev/null
+++ b/qtip/ansible_library/plugins/action/collect.py
@@ -0,0 +1,45 @@
+#!/usr/bin/python
+
+###############################################################
+# Copyright (c) 2017 ZTE Corporation
+#
+# All rights reserved. This program and the accompanying materials
+# are made available under the terms of the Apache License, Version 2.0
+# which accompanies this distribution, and is available at
+# http://www.apache.org/licenses/LICENSE-2.0
+##############################################################################
+
+from collections import defaultdict
+import re
+
+from ansible.plugins.action import ActionBase
+
+
+class ActionModule(ActionBase):
+
+    def run(self, tmp=None, task_vars=None):
+        result = super(ActionModule, self).run(tmp, task_vars)
+
+        if result.get('skipped', False):
+            return result
+
+        string = self._task.args.get('string')
+        patterns = self._task.args.get('patterns')
+
+        return collect(patterns, string)
+
+
+def collect(patterns, string):
+    """collect all named subgroups of the match into a list keyed by subgroup name
+    """
+    captured = defaultdict(list)
+
+    if not isinstance(patterns, list):
+        patterns = [patterns]
+
+    for p in patterns:
+        for match_obj in re.finditer(p, string, re.MULTILINE):
+            for (key, value) in match_obj.groupdict().items():
+                captured[key].append(value)
+
+    return captured